ASTROSAT CZTI

Data Quality Report

Orbit 20399

Creation date: 2024-06-27T18:14:54.234589
Switch to: Orbit-wise | Merged OBSID-wise
web.py, SVN revision $Rev$

Source files: Data quality report (detailed, human readable) | Data quality report (concise, machine readable)

Observation information


Basic statistics of files

Param Original file Final file
FilenamemodeM0/AS1A05_198T01_9000003014_20399cztM0_level2.evt modeM0/AS1A05_198T01_9000003014_20399cztM0_level2_quad_clean.evt
Size (bytes)585,584,64099,069,120
Size558.5 MB 94.5 MB
Events in quadrant A3,673,912632,190
Events in quadrant B3,879,285639,810
Events in quadrant C3,716,287614,400
Events in quadrant D5,940,916576,376

Level1 data integrity


Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01560
B01560
C01560
D01560

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0159391
B0163851
C0159411
D0227081

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A010
B010
C010
D010

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A77212503.237923%
B77222833.664854%
C77222473.198653%
D772299812.924113%

Noise dominated fraction

Noise dominated data is calculated using 1-second bins in cleaned event files. If a bin has >2000 counts, and if more than 50% of those come from <1% of pixels, then it is considered to be noise-dominated and hence unusable.

Quadrant # 1 sec bins Bins with >0 counts Bins with >2000 counts High rate bins dominated by noise Noise dominated (total time) Noise dominated (detector-on time) Marked lightcurve
A 7776 7722 0 0 0.00% 0.00%
B 7777 7723 11 11 0.14% 0.14%
C 7777 7723 0 0 0.00% 0.00%
D 7777 7723 726 726 9.34% 9.40%

Top noisy pixels

Top three noisy pixels from each quadrant. If the there are fewer than three noisy pixels in the level2.evt file, extra rows are filled as -1

Pixel properties Quadrant properties
Quadrant DetID PixID Counts Sigma Mean Median Sigma
A 12 96 8681 40.29 951 927 192.5
A 3 137 8127 37.41 951 927 192.5
A 0 226 8106 37.3 951 927 192.5
B 0 189 97600 529.55 938 911 182.6
B 3 64 42625 228.46 938 911 182.6
B 12 111 22512 118.3 938 911 182.6
C 14 238 141160 653.26 912 917 214.7
C 13 61 6397 25.53 912 917 214.7
C 3 233 5853 22.99 912 917 214.7
D 1 52 2521600 11611.95 884 858 217.1
D 2 184 42859 193.48 884 858 217.1
D 2 234 30602 137.02 884 858 217.1

Detector plane histogram (DPH)

Histogram calculated using DETX and DETY for each event in the final _common_clean file

Quadrant A Quadrant B
Quadrant D Quadrant C

Count rate plots and images

Plot type Count rate plots Images
Comparison with Poisson distribution
Blue bars denote a histogram of data divided into 1 sec bins.
Red curve is a Poisson curve with rate = median count rate of data.
Quadrant-wise count rates
Data is divided into 100 sec bins
Module-wise count rates for Quadrant A
Data is divided into 100 sec bins
Module-wise count rates for Quadrant B
Data is divided into 100 sec bins
Module-wise count rates for Quadrant C
Data is divided into 100 sec bins
Module-wise count rates for Quadrant D
Data is divided into 100 sec bins

Housekeeping plots

Parameter Plot
CZT HV Monitor
D_VDD
Temperature 1
Veto HV Monitor
Veto LLD
Alpha Counter
_CPM_Rate
CZT Counter
+2.5 Volts monitor
+5 Volts monitor
_ROLL_ROT
_Roll_DEC
_Roll_RA
Veto Counter